2C+Cross+Multiplication

Problem 1 36/54=6/X 54*6=324 36/324=9

Problem 2 12/x=4/1 12*1 4/12 x=3

Problem 3 X-2/5- 10-X/8 5(10-X) 50-5X 8(X-2) 8x-16 50-5x=8x-16 +5x=+5X 50=13X-16 +16 +16 66/13=13X/13 X=5.1

Leah Naima Ranee